Provisioning Methods And Apparatus For Wireless Local Area Networks (WLANS) With Use Of A Provisioning ESSID

ABSTRACT

A wireless network has a primary network which provides one or more communication services and a provisioning network which provides a provisioning service but disallows the one or more communication services. A mobile device associates with an access point of the wireless network by sending a request which includes a first set service identifier (SSID) for accessing and operating in the provisioning network. If an authentication procedure is successful, the device receives via the access point a second SSID in a provisioning procedure with the provisioning network, and programs the second SSID in a network list. The device subsequently associates with the access point by sending a request which includes the second SSID from the network list instead of the first SSID, for accessing and operating in the primary network for the one or more communication services.

CROSS-REFERENCE TO RELATED APPLICATIONS

This patent application is a continuation of and claims priority to aU.S. non-provisional patent application having application Ser. No.11/611,293 and filing date of 15 Dec. 2006, now U.S. Pat. No. ______,which claims priority to U.S. non-provisional patent application havingapplication Ser. No. 11/482,864 and filing date of 7 Jul. 2006, eachapplication being hereby incorporated by reference herein.

BACKGROUND

1. Field of the Technology

The present application relates to provisioning extended service setidentifiers (ESSIDs) of mobile communication devices which operate inwireless local area networks (WLANs).

2. Description of the Related Art

In wireless communication networks, such as wireless local area networks(WLANs) which operate in accordance with 802.11-based standards, one ormore network identifiers may be utilized by mobile communication devicesto identify the appropriate WLAN to connect with and obtain services.One of these services may be a voice telephony service, such as thevoice telephony service based on Voice over IP (VoIP) communications viathe WLAN. For 802.11-based WLANs, the network identifiers are calledextended service set identifiers (ESSIDs).

After a mobile device is manufactured and sold, the ESSID of the WLANfor the mobile device needs to be programmed or saved in memory of themobile device. This type of programming is typically referred to asprovisioning. Typically, the ESSID is entered in by the end user througha keyboard of the mobile device. It is desirable, however, to minimizedata entry steps for provisioning a mobile device. It would be desirableto have the WLAN itself provision the mobile device with the ESSID, butthe mobile device needs the ESSID of the WLAN in order to initiallyconnect with its WLAN.

BRIEF DESCRIPTION OF THE DRAWINGS

Embodiments of present invention will now be described by way of examplewith reference to attached figures, wherein:

FIG. 1 is a block diagram which illustrates a communication system whichincludes a communication network having a wireless local area network(WLAN);

FIG. 2 is a more detailed schematic diagram of a mobile communicationdevice of the WLAN of FIG. 1, namely, a mobile communication device ofthe preferred embodiment;

FIG. 3 is a flowchart of a provisioning procedure for a mobile device toobtain a primary extended service set identifier (ESSID) from the WLAN;

FIG. 4 is a flowchart of a provisioning procedure for the network toprovide the mobile device with the primary ESSID; and

FIG. 5 is a flowchart of a particular technique for deriving aprovisioning ESSID for use in the provisioning procedures of the presentapplication.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

Methods and apparatus for use in provisioning mobile communicationdevices in wireless local area networks (WLANs) are described. In oneillustrative example, a mobile communication device associates with awireless access point of a provisioning virtual local area network(VLAN) of the network with use of a provisioning network identifier(“provisioning ESSID”). After associating with the wireless access pointwith the provisioning network identifier, a primary network identifier(“primary ESSID”) associated with a primary VLAN of the network isreceived from the WLAN in a provisioning procedure and stored in memoryof the mobile device after authentication. For subsequent communicationswith the WLAN, the mobile device associates with a wireless access pointof the primary VLAN of the network with use of the primary networkidentifier.

FIG. 1 is a block diagram which illustrates a communication system 100which includes a public network 102 (e.g. the Internet) and a privatenetwork 104. In the present embodiment, private network 104 is orincludes a wireless local area network (WLAN). In the WLAN, terminalsmay connect to their associated networks through access points (APs) asshown. Preferably, at least some of the APs are wireless APs of the WLANand at least some of the terminals are mobile/wireless communicationdevices which interface and connect through these wireless APs. Suchterminals and APs may operate in accordance with well-known IEEE 802.11standards. The terminals shown in public network 102 include terminals110 and 112 which have interfaced with AP 106, and terminals 114, 116,and 118 which have interfaced with AP 108. The terminals shown inprivate network 104 include terminals 134, 136, 138 which haveinterfaced with AP 132, and terminals 144 and 146 which have interfacedwith AP 142.

Private network 104 which includes the WLAN provides various data andcommunication services to its terminals. For example, private network104 may provide for voice telephony communication services for itsterminals with use of Voice over IP (VoIP) communications. For thesetypes of services, private network 104 may utilize a VoIP serverarchitecture for VoIP communication sessions, and/or an e-mail serverarchitecture for e-mail message communications, as examples. For thesepurposes, communication system 100 may also include at least one VoIP orSession Initiation Protocol (SIP) proxy server. In the presentembodiment, communication system 100 has a VoIP or SIP proxy server 121in public network 102 and a VoIP or SIP proxy server 130 in privatenetwork 104. Note that some communication applications utilized byterminals, such VoIP applications, require the use of SIP. SIP iswell-documented in standard documents such as Request For Comments (RFC)3261. A firewall 124 may also be provided in private network 104 forpreventing unauthorized access from users in public network 102. Privatenetwork 104 also has a provisioning server 128 which assists inperforming wireless network provisioning procedures with terminals fortheir receipt and programming of enterprise-specific ESSIDs, which isdescribed in more detail below in relation to FIGS. 3-4.

Referring now to FIG. 2, electrical components of a typical terminal ormobile communication device 202 (e.g. a mobile station) which operateswith wireless APs of communication system 100 of FIG. 1 will bedescribed. Mobile device 202 may be representative of one or moreterminals shown and described in relation to FIG. 1. Mobile device 202is preferably a two-way communication device having at least voice andadvanced data communication capabilities, including the capability tocommunicate with other computer systems. Also preferably, mobile device202 is a wireless communication device which operates in accordance withan IEEE 802.11 standards. Depending on the functionality provided bymobile device 202, it may be referred to as a data messaging device, atwo-way pager, a cellular-type telephone with data messagingcapabilities, a wireless Internet appliance, or a data communicationdevice (with or without telephony capabilities).

As shown in FIG. 2, mobile device 202 is adapted to wirelesslycommunicate with AP 190 which may be a wireless AP of the presentapplication. For communication with AP 190, mobile device 202 utilizescommunication subsystem 211. Depending on the type of device, mobiledevice 202 may also be adapted to wirelessly communicate with othersystems such as cellular telecommunication systems. With suchconfiguration, mobile device 202 may be referred to as a “dual mode”mobile device. Although mobile device 202 may have separate andindependent subsystems for these purposes, at least some portions orcomponents of these otherwise different subsystems may be shared wherepossible. Note, however, that the provisioning techniques of the presentapplication do not require that mobile device 202 be any type of dualmode device.

Communication subsystem 211 includes a receiver 212, a transmitter 214,and associated components, such as one or more (preferably embedded orinternal) antenna elements 216 and 218, local oscillators (LOs) 213, anda processing module such as a baseband (BB) and media access control(MAC) processing module 220. As will be apparent to those skilled in thefield of communications, the particular design of communicationsubsystem 211 depends on the communication network in which mobiledevice 202 is intended to operate. In the present application,communication subsystem 211 (including its associatedprocessor/processing components) are operative in accordance with IEEE802.11 standards.

Mobile device 202 may send and receive communication signals through thenetwork after required network procedures have been completed. Signalsreceived by antenna 216 through the network are input to receiver 212,which may perform such common receiver functions as signalamplification, frequency down conversion, filtering, channel selection,and like, and in example shown in FIG. 2, analog-to-digital (A/D)conversion. A/D conversion of a received signal allows more complexcommunication functions such as demodulation and decoding to beperformed in BB/MAC processing module 220. In a similar manner, signalsto be transmitted are processed, including modulation and encoding, forexample, by BB/MAC processing module 220. These processed signals areinput to transmitter 214 for digital-to-analog (D/A) conversion,frequency up conversion, filtering, amplification and transmissionthrough the network via antenna 218. BB/MAC processing module 220 notonly professes communication signals, but may also provide for receiverand transmitter control. Note that receiver 212 and transmitter 214 mayshare one or more antennas through an antenna switch (not shown in FIG.2), instead of having two separate dedicated antennas 216 and 218 asshown.

Since mobile device 202 may be a portable battery-powered device, italso includes a battery interface 254 for receiving one or morerechargeable batteries 256. Such a battery 256 provides electrical powerto most if not all electrical circuitry in mobile device 202, andbattery interface 254 provides for a mechanical and electricalconnection for it. Battery interface 254 is coupled to a regulator (notshown in FIG. 2) that provides power V+ to all of the circuitry.

Mobile device 202 includes a microprocessor 238 (one type of processoror controller) that controls overall operation of mobile device 202.This control includes the provisioning techniques of the presentapplication. Communication functions, including at least data and voicecommunications, are performed through communication subsystem 211.Microprocessor 238 also interacts with additional device subsystems suchas a display 222, a flash memory 224, a random access memory (RAM) 226,auxiliary input/output (I/O) subsystems 228, a serial port 230, akeyboard 232, a speaker 234, a microphone 236, a short-rangecommunications subsystem 240, and any other device subsystems generallydesignated at 242. Some of the subsystems shown in FIG. 2 performcommunication-related functions, whereas other subsystems may provide“resident” or on-device functions. Notably, some subsystems, such askeyboard 232 and display 222, for example, may be used for bothcommunication-related functions, such as entering a text message fortransmission over a communication network, and device-resident functionssuch as a calculator or task list. Operating system software used bymicroprocessor 238 is preferably stored in a persistent store such asflash memory 224, which may alternatively be a read-only memory (ROM) orsimilar storage element (not shown). Those skilled in the art willappreciate that the operating system, specific device applications, orparts thereof, may be temporarily loaded into a volatile store such asRAM 226.

Microprocessor 238, in addition to its operating system functions,preferably enables execution of software applications on mobile device202. A predetermined set of applications that control basic deviceoperations, including at least data and voice communicationapplications, will normally be installed on mobile device 202 during itsmanufacture. A preferred application that may be loaded onto mobiledevice 202 may be a personal information manager (PIM) applicationhaving the ability to organize and manage data items relating to usersuch as, but not limited to, e-mail, calendar events, voice mails,appointments, and task items. Naturally, one or more memory stores areavailable on mobile device 202 (e.g. a Subscriber Identity Module or SIM257) to facilitate storage of PIM data items and other information.

The PIM application preferably has the ability to send and receive dataitems via the wireless network. In a preferred embodiment, PIM dataitems are seamlessly integrated, synchronized, and updated via thewireless network, with the wireless device user's corresponding dataitems stored and/or associated with a host computer system therebycreating a mirrored host computer on mobile device 202 with respect tosuch items. This is especially advantageous where the host computersystem is the wireless device user's office computer system. Additionalapplications may also be loaded onto mobile device 202 through network,an auxiliary I/O subsystem 228, serial port 230, short-rangecommunications subsystem 240, or any other suitable subsystem 242, andinstalled by a user in RAM 226 or preferably a non-volatile store (notshown) for execution by microprocessor 238. Such flexibility inapplication installation increases the functionality of mobile device202 and may provide enhanced on-device functions, communication-relatedfunctions, or both. For example, secure communication applications mayenable electronic commerce functions and other such financialtransactions to be performed using mobile device 202.

In a data communication mode, a received signal such as a text message,an a-mail message, or web page download will be processed bycommunication subsystem 211 and input to microprocessor 238.Microprocessor 238 will preferably further process the signal for outputto display 222 or alternatively to auxiliary I/O device 228. A user ofmobile device 202 may also compose data items, such as e-mail messages,for example, using keyboard 232 in conjunction with display 222 andpossibly auxiliary I/O device 228. Keyboard 232 is preferably a completealphanumeric keyboard and/or telephone-type keypad. These composed itemsmay be transmitted over a communication network through communicationsubsystem 211. For voice communications, the overall operation of mobiledevice 202 is substantially similar, except that the received signalswould be output to speaker 234 and signals for transmission would begenerated by microphone 236. Alternative voice or audio I/O subsystems,such as a voice message recording subsystem, may also be implemented onmobile device 202. Although voice or audio signal output is preferablyaccomplished primarily through speaker 234, display 222 may also be usedto provide an indication of the identity of a calling party, duration ofa voice call, or other voice call related information, as some examples:

Serial port 230 in FIG. 2 is normally implemented in a personal digitalassistant (PDA)-type. communication device for which synchronizationwith a user's desktop computer is a desirable, albeit optional,component. Serial port 230 enables a user to set preferences through anexternal device or software application and extends the capabilities ofmobile device 202 by providing for information or software downloads tomobile device 202 other than through a wireless communication network.The alternate download path may, for example, be used to load anencryption key onto mobile device 202 through a direct and thus reliableand trusted connection to thereby provide secure device communication.Short-range communications subsystem 240 of FIG. 2 is an additionaloptional component that provides for communication between mobile device202 and different systems or devices, which need not necessarily besimilar devices. For example, subsystem 240 may include an infrareddevice and associated circuits and components, or a Bluetooth™communication module to provide for communication with similarly enabledsystems and devices. Bluetooth™ is a registered trademark of BluetoothSIG, Inc.

Although a specific mobile device 202 has just been described, anysuitable mobile communication device or terminal may be part of theinventive methods and apparatus which will be described in fuller detailbelow. Note that many components of mobile device 202 shown anddescribed may not be included (e.g. a full QWERTY keypad may beoptional).

FIG. 3 is a flowchart of a method for provisioning a mobilecommunication device (e.g. one type of wireless terminal) to obtain aprimary extended service set identifier (ESSID) from a wirelesscommunication network (e.g. an 802.11-based wireless local area network(WLAN)), taken from the mobile device perspective. The method of FIG. 3may be performed by the mobile device, and/or be embodied in a computerprogram product which includes a computer readable medium (e.g. memory)and computer instructions stored in the computer readable medium whichare executable by one or more processors. The flowchart of FIG. 3 willbe discussed in combination with the components of the communicationsystem of FIG. 1.

Before describing the flowchart of FIG. 3 in detail, it is noted that aprimary virtual local area network (ULAN) of the network is adapted toprovide one or more services (e.g. VoIP or other communication services)for the mobile device. The WLAN may have one or more primary ESSIDsassociated with one or more different VLANs which permit separate andisolated LANs. In order to obtain a primary ESSID to gain access to suchservices, the mobile device is adapted to perform a wireless networkprovisioning procedure with the WLAN. Specifically, the mobile devicemakes use of a provisioning ESSID associated with a provisioning VLAN ofthe network for the provisioning procedure. The provisioning VLAN isadapted to perform the provisioning procedure with the mobile device,but otherwise allows for limited services in the network for the mobiledevice (e.g. IP address assignment via DHCP). The provisioning ESSID maybe a predetermined fixed ESSID utilized for all mobile devices (i.e. thesame fixed ESSID) which is stored in memory. Alternatively, theprovisioning ESSID may be unique to each network or mobile device andderived from particular information; this will be described later inrelation to FIG. 5. The provisioning ESSID is used initially by themobile device to associate with an AP of the provisioning VLAN in orderto subsequently receive and store a primary ESSID associated with theprimary VLAN of the network. The mobile device may then use conventionalor other techniques for associating with APs of the primary VLAN usingthis primary ESSID.

The wireless network provisioning procedure is initiated when the mobilecommunication device or terminal (terminal 134 of FIG. 1) is locatedwithin a coverage area of an access point (AP 132 of FIG. 1) of aprivate network (private network 104 of FIG. 1) having a WLAN. Whenterminal 134 is operating, it searches for access points within itscoverage range. Beginning at a start block 302 of FIG. 3, terminal 134sends one or more probe requests to access points (e.g. AP 132 ofFIG. 1) using its provisioning ESSID (step 304 of FIG. 3). In this step,terminal 134 may use 802.11 management frames known as probe requestframes to send the probe requests. Specifically, terminal 134 sendsprobe requests on every channel that it supports in an attempt to findall access points in range that match the provisioning ESSID. Terminal134 sends these requests to AP 132 and any other AP within range ofterminal 134 by performing programmed algorithms within BB/MACprocessing module 220 and/or microprocessor 238 (FIG. 2).

Next, terminal 134 monitors to receive probe response commands from AP132 and other APs within the range of terminal 134 (step 306 of FIG. 3).If no APs within the coverage area of terminal 134 are configured toassociate with terminal 134 using the provisioning ESSID, no proberesponses will be received by terminal 134. In this case, terminal 134will continue the sending of probe requests using the provisioning ESSID(step 304) and monitoring for probe requests from other APs (step 306).Once a probe response is properly received in step 306, terminal 134will associate with the AP (e.g. AP 132) of the provisioning VLAN of thenetwork for communications (step 308 of FIG. 3). This step establisheslayer-2 communications between terminal 134 and the WLAN. As analternative to the probe request/response protocol of steps 304 and 306,some APs may regularly broadcast the provisioning ESSIDs in “beacons.”In this case, terminal 134 would listen for beacons on all channels thatit supports and compare the provisioning ESSID broadcasted by the APwith its own provisioning ESSID and, if there is a match, associate withthe AP of the provisioning VLAN. After such association, terminal 134may be said to be operating in the provisioning VLAN of the network.

After terminal 134 associates with the desired AP 132 in step 308,terminal 134 monitors to receive an Internet Protocol (IP) address overthe WLAN (step 310 of FIG. 3). The IP address may be dynamicallyassigned by the network, for example, with use of an address assignor(e.g. address assignor 120 of FIG. 1) which may be a dynamic hostconfiguration protocol (DHCP) server reachable in the provisioning VLAN.This establishes layer-3 communications between terminal 134 and thenetwork.

Once terminal 134 properly receives the assigned IP address from theDHCP server, terminal 134 performs an authentication procedure with aprovisioning server (provisioning server 128 of FIG. 1) of theprovisioning VLAN (step 312 of FIG. 3). Terminal 134 may receive anetwork address of provisioning server 128 from AP 132 so that theauthentication procedure with provisioning server 128 may be initiated.In the authentication procedure, terminal 134 sends authenticationinformation (e.g. network password, fingerprint data, or the like) toprovisioning server 128. The authentication information may be unique toeach WLAN or terminal. Terminal 134 then monitors to receive anauthentication response from AP 132 (step 314 of FIG. 3).

The authentication response may indicate to terminal 134 thatauthentication is denied for accessing the WLAN (e.g. where networkpassword is incorrect). If authentication is denied by the WLAN,association between terminal 134 and AP 132 may be aborted (step 316 ofFIG. 3). It may be that terminal 134 has attempted to associate with anAP of a WLAN with which terminal 134 is not authorized and/or notdesired to access. From here, terminal 134 may start again at thebeginning of the flowchart in attempt to find the proper WLAN forprovisioning. Note that each AP is associated with a unique basicservice set identifier (BSSID) so that terminal 134 can avoid attemptingto perform provisioning authentication more than once with the same AP.

Once terminal 134 has received a positive authentication response froman AP, it is understood that it has gained provisioning access to theVLAN that it desires. In response to the positive authentication from AP132 at step 314, terminal 134 will send an ESSID request (or, moregenerally, a provisioning request) to provisioning server 128 to obtaina primary ESSID of the primary VLAN of the network (step 318 of FIG. 3).Terminal 134 then monitors to receive a response from AP 132 (step 320of FIG. 3). The response may indicate to terminal 134 that the requestis denied and, if so, access to the WLAN is denied and associationbetween terminal 134 and AP 132 may be aborted (step 322 of FIG. 3). Ifa positive response is received at step 320, the primary ESSID (e.g. theenterprise-specific ESSID) of the primary VLAN of the network iswirelessly received from the provisioning VLAN and “programmed” orstored in an internal network list in memory of terminal 134 (step 324of FIG. 3). During this timeframe, terminal 134 may also receiveadditional information, such as network access security keys and networkserver names/addresses for a VoIP server, a SIP server, and an e-mailserver, as examples, from provisioning server 128. Once the primaryESSID and any other information are obtained and stored in memory,terminal 134 may proceed to utilize the primary VLAN of the network forservices (step 326 of FIG. 3). Thus, for all subsequent communications,terminal 134 may utilize the programmed primary ESSID to associate withthe WLAN.

FIG. 4 is a flowchart for describing an illustrative method of awireless network provisioning procedure from the perspective of thenetwork. The method of FIG. 4 may be performed by the network (e.g. oneor more network servers) and/or the APs of the WLAN, and/or be embodiedin a computer program product which includes a computer readable medium(e.g. memory) and computer instructions stored in the storage mediumwhich are executable by one or more processors. Preferably, the networkperforms the wireless network provisioning procedure upon firstreceiving a request from an 802.11-based wireless terminal. Subsequently(after provisioning is completed), a conventional method is used forassociating with the same 802.11-based wireless terminal.

Prior to discussing FIG. 4 in detail, note that the network has aprimary VLAN which is associated with a primary network identifier (i.e.the primary ESSID) and a provisioning VLAN of the network which isassociated with a provisioning network identifier (i.e. the provisioningESSID) and includes a provisioning server. The primary VLAN of thenetwork is adapted to provide one or more services (e.g. VoIP or othercommunication services) for the mobile device. The WLAN may, in fact,have one or more primary ESSIDs associated with one or more differentVLANs of the WLAN which permit separate isolated LANs. On the otherhand, the provisioning VLAN is adapted to perform the provisioningprocedure with the mobile device, but otherwise allows for limitedservices in the network for the mobile device (e.g. IP addressassignment via DHCP). The provisioning ESSID may be a predeterminedfixed ESSID utilized for all mobile devices (i.e. the same fixed ESSID)which is stored in memory (e.g. factory-preset provisioning ESSID).Alternatively, the provisioning ESSID may be unique to each network ormobile device and derived from particular information, which will bedescribed later in relation to FIG. 5. The provisioning ESSID is usedinitially by the mobile device to associate with an AP of theprovisioning VLAN in order to subsequently receive and store the primaryESSID associated with the primary VLAN of the WLAN. The mobile devicemay then use conventional or other techniques for associating with APsof the primary VLAN using the primary ESSID.

The discussion of FIG. 4 may make reference to both FIGS. 1 and 4 incombination. Beginning at a start block 302 of FIG. 3, an AP of theprovisioning VLAN of the network monitors its RF channels for proberequests from mobile devices (step 404 of FIG. 4). In this step, proberequests are received in 802.11 management frames known as probe requestframes. Terminals, such as terminal 134, sends probe requests on everychannel that it supports in an attempt to find access points in rangethat have the provisioning ESSID. If a probe request having the primaryESSID of the primary VLAN is received (step 406 of FIG. 4), then theflowchart continues through steps 418 and 420 which is described later.If the probe request does not have the primary ESSID (step 406) butrather includes the provisioning. ESSID (step 408 of FIG. 4), then theAP of the provisioning VLAN sends a probe response to terminal 134 (step410 of FIG. 4) and, subsequently, terminal 134 associates with the AP(step 412 of FIG. 4). This establishes layer-2 communications betweenterminal 134 and the WLAN. As an alternative to the proberequest/response protocol, some APs may regularly broadcast theprovisioning ESSIDs in “beacons.” In this case, terminal 134 wouldcompare the provisioning ESSID broadcasted by the AP with its ownprovisioning ESSID and, if there is a match, associate with the AP ofthe provisioning VLAN. After such association, terminal 134 may be saidto be operating in the primary VLAN of the network.

After terminal 134 associates with the WLAN in step 308, the networkassigns and sends an Internet Protocol (IP) address to terminal 134(step 414 of FIG. 4). The IP address may be dynamically assigned by thenetwork, for example, with use of an address assignor (e.g. addressassignor 120 of FIG. 1) which may be a dynamic host configurationprotocol (DHCP) server reachable in the provisioning VLAN. Thisestablishes layer-3 communications between terminal 134 and the network.Sometime after the WLAN sends the assigned IP address from the DHCPserver in step 414, the provisioning server (provisioning server 128 ofFIG. 1) of the provisioning VLAN performs an authentication procedurewith terminal 134. Here, authentication request and authenticationinformation is received from terminal (step 416 of FIG. 4). AP 132 maysend a network address of provisioning server 128 to terminal 134 sothat the authentication procedure with provisioning server 128 may beinitiated. The authentication information may be unique to each WLAN orterminal, and may include a network password, fingerprint data, or thelike.

The authentication response may indicate to terminal 134 thatauthentication is denied for that WLAN (e.g. where network password isincorrect) (step 426 of FIG. 4). If authentication is denied by theWLAN, association between terminal 134 and AP 132 may be aborted. It maybe that terminal 134 has attempted to associate with an AP of a WLANwith which terminal 134 is not authorized and/or not desired to access.From here, terminal 134 may start again at the beginning of theflowchart in attempt to find the proper WLAN for provisioning. Note thateach AP is associated with a unique basic service set identifier (BSSID)so that terminal 134 can avoid attempting to perform provisioningauthentication more than once with the same AP.

If the authentication information is tested positive at step 422, thenit is understood that terminal 134 has gained provisioning access to theAP/WLAN that it desires. After a positive authentication from AP 132 atstep 424, the provisioning VLAN receives an ESSID request (or, moregenerally, a provisioning request) from terminal 134 to receive aprimary ESSID of the primary VLAN of the network (step 428 of FIG. 4).If not, access to the WLAN is denied (step 424 of FIG. 4) andassociation between terminal 134 and AP 132 may be aborted. Afterreceiving the ESSID request in step 428, the provisioning VLAN causesthe primary ESSID (e.g. the enterprise-specific ESSID) of the primaryVLAN of the network to be wirelessly sent from AP 132 to terminal 134(step 430 of FIG. 4). This primary ESSID is “programmed” or stored in aninternal network list in memory of terminal 134. During this timeframe,the WLAN may also send additional information, such as network accesssecurity keys and network server names/addresses for a VoIP server, aSIP server, and an e-mail server, as examples. Once the primary ESSIDand any other information are sent by the provisioning VLAN and storedin memory of terminal 134, the primary VLAN of the network may provideservices to terminal 134 where it utilizes the primary ESSID forassociation with APs of the WLAN (step 432 of FIG. 4). Thus, for allsubsequent communications, terminal 134 may utilize the programmedprimary ESSID to associate with the WLAN.

As described earlier above, the provisioning ESSID may be apredetermined fixed ESSID utilized for all mobile devices (i.e. the samefixed ESSID) which is stored in memory (e.g. a factory-presetprovisioning ESSID for all mobile devices). Alternatively, theprovisioning ESSID may be unique to each network or mobile device andderived from particular information. This latter technique is nowdescribed in relation to FIG. 5.

FIG. 5 is a flowchart which describes a method for use in deriving theprovisioning ESSID for use in the provisioning procedures described inrelation to FIGS. 3 and 4. The method of FIG. 5 may be performed by boththe mobile device and the network device (e.g. a provisioning serverand/or AP in the WLAN), and/or be embodied in a computer program productwhich includes a computer readable medium (e.g. memory) and computerinstructions stored in the computer readable medium which are executableby one or more processors.

Beginning at a start block 502 of FIG. 5, network information associatedwith the network or WLAN is identified by the device (step 504 of FIG.5). In the present embodiment, these network-specific criteria are allor part of a domain name of the private network of which the WLAN is apart. For example, the network-specific criteria may be “company123”based on the domain name “www.company123.com” associated with theprivate network of the WLAN. In the network device, the domain name maybe easily obtained from the DHCP server or the like. In the mobiledevice, this information may be obtained from an application program ofthe mobile device (e.g. an e-mail application program) or as user inputinformation received through the user interface of the mobile device.The latter approach may be preferable, especially in the case where themobile device already requires the end user to use the user interface toenter in one or more e-mail addresses (john.doe@company123.com) ofe-mail accounts for sending and receiving e-mail messages with themobile device. In this case, the mobile device must extract all or partof the domain name from the e-mail address. As another example, thenetwork-specific criteria may be all or part of a company name(acme_company) which owns the private network of which the WLAN is apart. Other types of criteria may be utilized, as will be describedlater below.

Next, predetermined provisioning criteria are identified at the device(step 506 of FIG. 5). Preferably, the predetermined provisioningcriteria is the same for all mobile devices and all networks, andestablished during the design or manufacturing and stored in memory ofthe devices. Thus, the predetermined provisioning criteria is known inadvance and stored in memory of the network and the mobile devices. Inthe present embodiment, the predetermined provisioning criteria arealphanumeric characters of a fixed alphanumeric string which is the samefor all mobile devices and networks. For example, the predeterminedprovisioning criteria may be a fixed alphanumeric string such as“provdevice” or “prvdev456”. Other types of criteria may be utilized, aswill be described later below.

Next, the provisioning ESSID for use in the provisioning procedure isderived based on both the network-specific criteria and predeterminedprovisioning criteria (step 508 of FIG. 5). In general, the resultingprovisioning ESSID should be unique for each given uniquenetwork-specific criteria. In the mobile device, the provisioning ESSIDis stored in a network list in memory. In the network, this derivedprovisioning ESSID is associated and utilized with APs of theprovisioning ULAN of the network. The provisioning ESSID is utilized byboth the mobile device and network components in the network in theprovisioning procedures described above in relation to FIGS. 3-4.

In the derivation step 506 of FIG. 5, a predetermined algorithm is usedto derive the provisioning ESSID from both the predeterminedprovisioning criteria and the network-specific criteria. In one example,the derivation of the provisioning ESSID is performed with use of apredetermined algorithm that is an “appending” algorithm. For example,if the network-specific criteria is “company123” and the predeterminedprovisioning criteria is “provdevice”, then the provisioning ESSID maybe derived as “provdevice_company123” using the appending algorithm.Here, the alphanumeric characters of both the predetermined provisioningcriteria and the network criteria form part of the derived provisioningESSID. A truncation step may be performed in any of such techniques, sothat the provisioning ESSID may be derived as “provdevice_compan”, forexample. With use of such approaches, only one set of alphanumericcharacters (i.e. the predetermined provisioning criteria or thenetwork-specific criteria) or a part thereof need form the resultingprovisioning ESSID. As another example, the derivation of theprovisioning ESSID is performed with use of a “character interleaving”algorithm so that, using the above-example criteria, the provisioningESSID may be derived as “cpormopvadneyv1i2c3e” or truncated form as“cpormopvad”.

In even another variation, the predetermined provisioning criteria mayadditionally or alternatively specify the predetermined algorithm bywhich network-specific criteria are manipulated into the provisioningESSID. For example, the network-specific criteria may be “company123”and the predetermined provisioning criteria may be a “backwards text”algorithm so that the derived provisioning ESSID is “321ynapmoc”. In theabove example, the predetermined provisioning criteria only specify thealgorithm and no other information. A truncation step may further formpart of this predetermined algorithm. The reverse approach may also beutilized, where the network-specific criteria additionally oralternatively specifies the predetermined algorithm by which thepredetermined criteria is derived into the provisioning ESSID. Asapparent, there are many possibilities and variations for deriving theprovisioning ESSID.

More broadly, it is noted that the method of deriving an ESSID describedabove in relation to FIG. 5 may be employed to derive a primary ESSIDfor the network without regard to any provisioning ESSID or provisioningprocedure. Such a method for use in producing an ESSID for use incommunications with a WLAN may include the steps of receiving networkcriteria associated with the network; deriving the ESSID based on bothpredetermined criteria and the network criteria associated with thenetwork; storing the ESSID in memory; and associating with a wirelessaccess point of the WLAN of the network with use of the ESSID. The ESSIDmay be a provisioning ESSID for a provisioning procedure of the network,or a primary ESSID of the WLAN for accessing services of the network.

Final Comments. As described herein, methods and apparatus for use inprovisioning mobile communication devices in WLANs have been detailed. Amobile communication device associates with a wireless access point of aprovisioning VLAN of the network with use of a provisioning networkidentifier. After associating with the wireless access point, a primarynetwork identifier (“primary ESSID”) associated with a primary VLAN ofthe network is received from the WLAN and “programmed” or stored inmemory of the mobile device after an authentication procedure. Forsubsequent communications with the WLAN, the mobile device associateswith a wireless access point of the primary VLAN of the network with useof the primary network identifier.

A mobile communication device of the present application may include oneor more processors; a wireless transceiver coupled to the one or moreprocessors; and memory coupled to the one or more processors. The one ormore processors are operative to associate, with use of the wirelesstransceiver, with a wireless access point of the wireless network usinga provisioning network identifier; after associating with the wirelessaccess point of the wireless network, receive a primary networkidentifier from the wireless network through the wireless transceiver;storing the primary network identifier in the memory; and for subsequentcommunications with the wireless network: associate, with use of thewireless transceiver, with a wireless access point of the wirelessnetwork using the primary network identifier.

From the network perspective, a method for use in provisioning a mobilecommunication device may involve the steps of allowing a mobilecommunication device to associate with a wireless access point of theWLAN with use of a provisioning network identifier; after associatingwith the wireless access point of the WLAN, causing a primary networkidentifier to be sent from the WLAN to the mobile communication device;and for subsequent communications with the WLAN: allowing the mobilecommunication device to associate with a wireless access point of theWLAN with use of the primary network identifier. The WLAN of the presentapplication may have a primary virtual local area network (VLAN) whichis associated with a primary network identifier; a provisioning VLANwhich is associated with a provisioning network identifier; aprovisioning server of the provisioning VLAN; and at least one wirelessaccess point. The at least one wireless access point is operative toallow a mobile communication device to associate with it with use of theprovisioning network identifier; after the mobile communication deviceassociates with the at least one wireless access point, cause theprimary network identifier to be transmitted from the WLAN to the mobilecommunication device; and for subsequent communications with the mobilecommunication device: allow the mobile communication device to associatewith the at least one wireless access point with use of the primarynetwork identifier.

Finally, a method of producing an ESSID for use in communications with aWLAN may include the steps of receiving network criteria associated withthe network; deriving the ESSID based on both predetermined criteria andthe network criteria associated with the network; storing the ESSID inmemory; and associating with a wireless access point of the WLAN withuse of the ESSID. This derived ESSID may be a provisioning ESSID for aprovisioning procedure of the WLAN, or a primary ESSID of the WLAN foraccessing services of the network.

The above-described embodiments of the present application are intendedto be examples only. Those of skill in the art may effect alterations,modifications and variations to the particular embodiments withoutdeparting from the scope of the application. For example, the WLANs maybe based on WiMAX technology or other suitable wireless technologies.The invention described herein in the recited claims intends to coverand embrace all suitable changes in technology.

1. A method in a mobile communication device for use in communicating ina wireless network, the wireless network having a primary network whichprovides one or more communication services and a provisioning networkwhich provides a provisioning service but disallows the one or morecommunication services, the method comprising: sending, to an accesspoint of the wireless network, a request for associating with the accesspoint for accessing and operating in the provisioning network, therequest including a first set service identifier (SSID); while beingassociated with the access point using the first SSID, sendingauthentication information to the wireless network in an authenticationprocedure; if the authentication procedure is successful, then:receiving, via the access point, a second SSID in a provisioningprocedure with the provisioning network; programming the second SSID ina network list maintained in memory of the mobile device; and for eachone of a plurality of subsequent associations with an access point ofthe wireless network: sending a request for associating with the accesspoint for accessing and operating in the primary network, the requestincluding the second SSID instead of the first SSID.
 2. The method ofclaim 1, wherein the mobile communication device is operative inaccordance with IEEE 802.11.
 3. The method of claim 1, wherein theauthentication procedure comprises a login procedure with the wirelessnetwork and the authentication information comprises a password.
 4. Themethod of claim 1, wherein the first SSID comprises a first ExtendedSSID (ESSID) and the second SSID comprises a second ESSID.
 5. The methodof claim 1, wherein the act of associating with the wireless networkcomprises the further acts of: causing a probe request with the firstSSID to be sent to the wireless access point of the wireless network;and monitoring to receive a probe response from the wireless accesspoint in response to the probe request.
 6. The method of claim 1,further comprising: if the authentication procedure is unsuccessful,then failing to receive the second SSID.
 7. The method of claim 1, whichis embodied in a computer readable medium as computer instructionsstored therein, the computer instructions being executable by one ormore processors of the mobile communication device.
 8. A mobilecommunication device configured to operate in a wireless network, thewireless network having a primary network configured to provide one ormore communication services and a provisioning network configured toprovide a provisioning service but disallow the one or morecommunication services, the mobile communication device comprising: oneor more processors; a wireless transceiver coupled to the one or moreprocessors; memory coupled to the one or more processors; the one ormore processors being operative to: sending, via the wirelesstransceiver, to an access point of the wireless network, a request forassociating with the access point for accessing and operating in theprovisioning network, the request including a first set serviceidentifier (SSID); while being associated with the access point usingthe first SSID, send via the wireless transceiver authenticationinformation to the wireless network in an authentication procedure; ifthe authentication procedure is successful, then: receive, via theaccess point, a second SSID in a to provisioning procedure with theprovisioning network; program the second SSID in a network listmaintained in the memory; and for each one of a plurality of subsequentassociations with an access point of the wireless network: sending, viathe wireless transceiver to the access point, a request for associatingwith the access point for accessing and operating in the primarynetwork, the request including the second SSID instead of the firstSSID.
 9. The mobile communication device of claim 8, which is operativein accordance with IEEE 802.11.
 10. The mobile communication device ofclaim 8, wherein the authentication procedure comprises a loginprocedure with the wireless network and the authentication informationcomprises a password.
 11. The mobile communication device of claim 8,wherein the first SSID comprises a first Extended SSID (ESSID) and thesecond SSID comprises a second ESSID.
 12. The mobile communicationdevice of claim 8, wherein the one or more processors are configured toassociate with the wireless network by: causing a probe request with thefirst SSID to be sent to the wireless access point of the wirelessnetwork; and monitoring to receive a probe response from the wirelessaccess point in response to the probe request.
 13. The mobilecommunication device of claim 8, wherein the one or more processors areconfigured to: if the authentication procedure is unsuccessful, thenfail to receive the second SSID.
 14. A method in a wireless network foruse in providing communications with a mobile communication device, thewireless network having a primary network which provides one or morecommunication services and a provisioning network which provides aprovisioning service but disallows the one or more communicationservices, the method comprising: receiving, from the mobilecommunication device, a request for associating with an access point ofthe wireless network for mobile device access and operation in theprovisioning network, the request including a first set serviceidentifier (SSID); while the mobile device is associated with the accesspoint using the first SSID, receiving authentication information fromthe mobile communication device in an authentication procedure; if theauthentication procedure is successful, then sending to the mobilecommunication device a second SSID in a provisioning procedure, forprogramming the second SSID in the mobile communication device; andreceiving, from the mobile communication device, a request forassociating with an access point of the wireless network for mobiledevice access and operation in the primary network, the requestincluding the second SSID instead of the first SSID.
 15. The method ofclaim 14, wherein the wireless network comprises a wireless local areanetwork (WLAN) and the wireless network is operative in accordance withIEEE 802.11.
 16. The method of claim 14, wherein the authenticationprocedure comprises a login procedure with the wireless network and theauthentication information comprises a password.
 17. The method of claim14, wherein the first SSID comprises a first Extended SSID (ESSID) andthe second SSID comprises a second ESSID.
 18. The method of claim 14,which is embodied in a computer readable medium as computer instructionsstored therein, the computer instructions being executable by one ormore processors of the wireless network.
 19. A wireless communicationnetwork having a primary network which provides one or morecommunication services and a provisioning network which provides aprovisioning service but disallows the one or more communicationservices, the wireless communication network comprising: at least oneaccess point; at least one server; the at least one access point beingconfigured to receive, from a mobile communication device, a request forassociating with the access point, for mobile device access andoperation in the provisioning network, the request including a first setservice identifier (SSID); the at least one server being configured toreceive authentication information from the mobile communication devicein an authentication procedure while the mobile device is associatedwith the access point using the first SSID; the at least one serverbeing configured to, if the authentication procedure is successful, sendto the mobile communication device a second SSID in a provisioningprocedure; and the at least one access point being further configured toreceive, from the mobile communication device, a request for associatingwith the access point, for mobile device access and operation in theprimary network, the request including the second SSID instead of thefirst SSID.
 20. The wireless communication network of claim 19,comprising a wireless local area network (WLAN) operative in accordancewith IEEE 802.11.